Discusses the selection line methods of convey coal pipe of long distance, from the angles of selection line principle, and the basic data to collect, etc.
本文从选线的原则、选线需搜集的基础资料等角度，论述了长距离输煤管道线路的选线方法。
This method explained how to program using a trade line at long distance and explained the basic theory of communication.
这一方法展示了如何通过一条商业电话线对芯片进行远程重编程，说明了信息通讯的基本原理和基本要求。
This method explained how to program using a trade line at long distance and explained the basic theory of communication.
这一方法展示了如何通过一条商业电话线对芯片进行远程重编程，说明了信息通讯的基本原理和基本要求。
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